CVE-2025-58636 is a critical vulnerability identified in the CRM Perks WP Gravity Forms Keap/Infusionsoft WordPress plugin, specifically affecting versions up to and including 1.2.3. The vulnerability arises from insecure deserialization of untrusted data, which allows an attacker to perform object injection attacks. This type of vulnerability occurs when user-supplied input is deserialized without proper validation or sanitization, enabling attackers to manipulate serialized objects to execute arbitrary code or commands on the server. The vulnerability is remotely exploitable over the network without requiring authentication or user interaction, as indicated by the CVSS vector (AV:N/AC:L/PR:N/UI:N). Successful exploitation can lead to full compromise of the affected system, impacting confidentiality, integrity, and availability of data and services. The plugin integrates Keap/Infusionsoft CRM functionality with Gravity Forms in WordPress, which is widely used for form management and customer data collection. Attackers exploiting this vulnerability could execute arbitrary PHP code, escalate privileges, access sensitive customer data, or disrupt service availability. Although no known exploits are currently reported in the wild, the critical CVSS score of 9.8 underscores the urgency for remediation. The vulnerability was reserved in early September 2025 and published in November 2025, suggesting recent discovery and disclosure. No official patches or updates are currently linked, so organizations must monitor vendor communications closely. Given the plugin’s role in handling CRM data, exploitation could have severe business and compliance implications, especially under regulations like GDPR.

For European organizations, the impact of CVE-2025-58636 is significant due to the potential for full system compromise via remote code execution without authentication. Confidential customer data managed through Keap/Infusionsoft CRM integrations could be exposed or manipulated, leading to data breaches and regulatory violations under GDPR. Integrity of business-critical data and workflows could be undermined, affecting sales, marketing, and customer relationship processes. Availability of web services could be disrupted by attackers deploying denial-of-service or ransomware attacks post-exploitation. The reputational damage and financial costs associated with such breaches are substantial. Organizations relying heavily on WordPress and CRM plugins for customer data management are particularly vulnerable. The ease of exploitation increases the likelihood of automated attacks targeting unpatched systems. Additionally, the lack of known exploits currently in the wild does not reduce risk, as threat actors often develop exploits rapidly following public disclosure. European enterprises in sectors like retail, finance, and professional services that use these plugins are at elevated risk of targeted or opportunistic attacks.

1. Immediately identify and inventory all WordPress installations using the CRM Perks WP Gravity Forms Keap/Infusionsoft plugin, especially versions up to 1.2.3. 2. Disable or remove the vulnerable plugin until an official patch or update is released by the vendor. 3. Monitor vendor channels and Patchstack advisories for timely release of security updates and apply patches promptly. 4. Implement Web Application Firewalls (WAF) with custom rules to detect and block malicious serialized payloads and object injection attempts targeting the plugin endpoints. 5. Restrict access to WordPress admin and plugin endpoints using IP whitelisting or VPNs to reduce exposure. 6. Conduct thorough security audits and penetration testing focusing on deserialization vulnerabilities in WordPress environments. 7. Employ runtime application self-protection (RASP) or endpoint detection and response (EDR) solutions to detect anomalous behavior indicative of exploitation attempts. 8. Educate development and IT teams about secure coding practices related to serialization and deserialization. 9. Regularly back up WordPress sites and CRM data to enable rapid recovery in case of compromise. 10. Review and tighten WordPress user permissions to minimize potential damage from compromised accounts.